Hydrolysis of chlorine oxide yielding 1:5 HCl to HClO ratio Steps:

• Products require 6 Cl atoms for 1 HCl + 5 HClO.
• ClO₂ supplies 1 Cl per molecule, so 6 ClO₂ provide 6 Cl and 12 O.
• Add 3 H₂O for 6 H and 3 O; products use 5 O, leaving 10 O as 5 O₂.
• Equation 6 ClO₂ + 3 H₂O → HCl + 5 HClO + 5 O₂ balances Cl, H, O.

Why C is correct:

• ClO₂ disproportionates in water to HCl (-1 oxidation state) and HClO (+1), with stoichiometry matching 1:5 ratio per balanced equation.

Why the others are wrong:

• A. Cl₂: Equilibrium reaction Cl₂ + H₂O ⇌ HCl + HClO gives 1:1 ratio.
• B. ClO: Unstable radical with no defined hydrolysis to these acids.
• D. Cl₂O: Reacts as Cl₂O + H₂O → 2 HClO, producing only HClO.

Final answer: C